Submitted on: 20 May 2002.
Revised on: 18 June 2002.
Accepted on: 05 July 2002.
___________________Journal of Applied Nonlinear Dynamics
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Submitted on: 08 November 2019.
Revised on: 15 December 2019.
Accepted on: 13 January 2020.
___________________Journal of Applied Nonlinear Dynamics
Submitted on: 14 January 2016.
Revised on: 22 February 2016.
Accepted on: 02 April 2016.
___________________Journal of Applied Nonlinear Dynamics
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Submitted on: 17 July 2004.
Revised on: 07 November 2004.
Accepted on: 27 November 2004.
___________________Journal of Applied Nonlinear Dynamics
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Submitted on: 09 March 2018.
Revised on: 10 April 2018.
Accepted on: 21 April 2018.
___________________Journal of Applied Nonlinear Dynamics